General Science MCQ – 48 (Chemistry)

chemistry, physics, biology

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General Science MCQs including Physics, Chemistry, Biology. This help is General Eligibility Test like Entrance Exam, Sainik School, NDA, Army, All India Competitive exam, and All HP Exams. You can also play our weekly quiz and download all quizzes PDF as well.

1. How many orbitals can have the following set of quantum numbers, n = 3, l I = 1, m1 = 0?
(A) 3
(B) 1
(C) 4
(D) 2

2. Electronic configuration of the outer shell of the element Gd with atomic number 64 is?
(A) 4f4 5d5 6s1
(B) 4f3 5d5 6s2
(C) 4f5 5d4 6s1
(D) 4f7 5d1 6s2

3. A maximum number of electrons in a subshell can be?
(A) 4l + 2
(B) 4l – 2
(C) 2n2
(D) 2l + 1

4. The orientation of atomic orbitals depends on them?
(A) Spin quantum number
(B) Magnetic quantum number
(C) Azimuthal quantum number
(D) Principal quantum number

5. A gas X has Cp and Cv ratio as 1.4 at NTP 11.2 L of gas X will contain _______ number of atoms?
(A) 1.2 x 1023
(B) 3.01 x 1023
(C) 2.01 x 1023
(D) 6.02 x 1023

6. The number of unpaired electrons in N2+?
(A) 3
(B) 1
(C) 2
(D) 0

7. The excitation energy of a hydrogen atom from its ground state to its third excited state is?
(A) 12.75 eV
(B) 0.85 eV
(C) 10.2 eV
(D) 12.1 eV

8. 3p orbital has ____ radial nodes?
(A) 3
(B) 2
(C) 1
(D) 0

9. A 0.66 kg ball is moving with a speed of 100 m/s. Find its wavelength?
(A) 6.6 x 10-34m
(B) 6.6 x 10-32m
(C) 1.0 x 10-32m
(D) 1.0 x 10-35m

10. Orbital angular momentum of p electrons is?

Orbital angular momentum of p electrons


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